Cryptos. Learn how Bitcoin actually works by building it yourself in Python.

github.com/karpathy/cryptos

Problem

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.

Audience

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.

Market

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.

Pricing

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.

Vaya's read on this project

Problem, audience, market, and the verdict — sign in to see it.

Updates

June 2021

adding blog post as jupyter notebook Jun 21

May 2021

disable pylint unused variable warnings that have been bugging me and… May 31
update the docs with the partial block chain validation with our ligh… May 30
fix bug where I was not clamping new target at max target oops May 30
allow verbosity setting in SimpleNode May 30
add genesis block for mainnet/testnet and some parsing tests to make … May 30
add headers message of the protocol May 30
add getheaders message of the protocol May 30
modify the version handshake to be exactly to spec as per docs May 30
handshake with a node on the network!!! May 30
don't copy paste code not cool, make proper netaddr struct much nicer May 30
add version message payload serialization May 30
actually move the key pair generation into a helpful util so we're no… May 17
fix docs references that had gone stale May 16
add NetworkEnvelope for comms between nodes May 16
new bits calculation from the time difference between two blocks 2,01… May 11
add proof of work validation to Block class May 11
difficulty calculation May 11
implement pow target from bits field May 11
Block class is born! We're going to group transactions into blocks an… May 11